Note that this does not completely remove the ability for extensions
(e.g. Dropbox) to add emblems programmatically by using the
libnautilus-extension library, just the user-added emblems from the
properties dialog/emblems sidebar.

There is ability to bring emblems programmatically. So, How can i use libnautilus-extension library to add some emblems like Dropbox does? Or is there any tweak tool for this?

Second, download the python script from HERE, extract the downloaded archive and copy the nautilus_emblems_menu.py file to /usr/share/nautilus-python/extensions/ (To be able to do this, open Nautilus as root: "gksu nautilus /usr/share/nautilus-python/extensions/").

Third, restart Nautilus:

nautilus -q

Now when you right click a file or folder in Nautilus, you should see a new item called "Emblems".

Please make sure that you read the original source article in which I got this information from (link is given above), as it contains information on how to add even more emblems to Nautilus.

The easiest way to do it is to install thunar (from the Xubuntu distro --- should be as easy as apt-get install thunar). The Thunar developers have left the emblems option. Once you have set them with thunar, they are visible in nautilus too... so no need to change the default file browser if you do not want.

Thanks you its worked! It previously doesn't worked because I was using gnome-fallback-session. I logged out and open unity and there it worked fine. Again I logged out and logged into gnome-fallback-session and viola its worked.
–
RaviAug 1 '12 at 14:48